Birngrütz was formerly part of the German Empire. In the German Empire, the place was called Birngrütz.
The place is now called Grudza and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Birngrütz | German Empire | Löwenberg i. Schles. | 1939 |
| Grudza | Under Polish administration | Lwówek Śląski | 1945 |
| Grudza | Poland | Jelenia Góra | 1992 |